Portion of a footwear sole



FIG. 1 is a perspective view of a portion of a footwear sole showing mynew design; and,

FIG. 2 is a bottom plan view thereof.

The broken lines in FIGS. 1 and 2 are for disclosure purposes only anddo not form part of the claimed design. The top, left side, right side,front and rear views do not form part of the claimed design.

The ornamental design for a portion of a footwear sole, as shown anddescribed.